I haven't read the manhwa yet But I have noticed that the art style has changed a lot. So ...

I haven't read the manhwa yet But I have noticed that the art style has changed a lot. So I'm confused rn, like is story has also changed along with the art style or only the art style has changed.
Like Are the characters in the current chapter the same as those in the first chapter, with the same plot, or do they have the same names but a different plot from the first few chapters?

I know it's confusing but please answer me. It's KILLING me (ᗒᗩᗕ)